Beta-adrenergic blockade and metabo-chemoreflex contributions to exercise capacity.


PURPOSE Exercise-induced dyspnea in patients with cardiopulmonary diseases may be related to sympathetic nervous system activation, with increased metabo- and/or chemosensitivities. Whether this mechanism plays a role in exercising normal subjects remains unclear. METHODS Muscle sympathetic nerve activity (MSNA), HR, ventilation (V(E)), O2 saturation… (More)
DOI: 10.1249/MSS.0b013e31817fbe11


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